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CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) (in thousands) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2018 | Mar. 31, 2017
Cash flows from operating activities: |  |  |
Net income |  | $ 317,401 | $ 74,434
Adjustments to reconcile net income to net cash provided by operating activities: |  |  |
Net gain on divestiture activity |  | (385,369) | (37,463)
Depletion, depreciation, amortization, and asset retirement obligation liability accretion |  | 130,473 | 137,812
Abandonment and impairment of oil and gas properties |  | 5,625 | 0
Stock-based compensation expense |  | 5,412 | 5,455
Net derivative (gain) loss |  | 7,529 | (114,774)
Derivative settlement gain (loss) |  | (24,528) | 7
Amortization of debt discount and deferred financing costs |  | 3,866 | 4,946
Loss on extinguishment of debt |  | 0 | 35
Deferred income taxes |  | 98,366 | 33,225
Other, net |  | (2,527) | 3,376
Changes in current assets and liabilities: |  |  |
Accounts receivable |  | (4,464) | 30,407
Prepaid expenses and other |  | 755 | 178
Accounts payable and accrued expenses |  | (8,825) | (5,497)
Accrued derivative settlements |  | (3,579) | 2,838
Net cash provided by operating activities |  | 140,135 | 134,979
Cash flows from investing activities: |  |  |
Net proceeds from the sale of oil and gas properties |  | 490,780 | 744,333
Capital expenditures |  | (301,521) | (154,401)
Acquisition of proved and unproved oil and gas properties |  | 0 | (75,105)
Net cash provided by investing activities |  | 189,259 | 514,827
Cash flows from financing activities: |  |  |
Proceeds from credit facility |  | 0 | 397,500
Repayment of credit facility |  | 0 | (397,500)
Cash paid to repurchase Senior Notes |  | 0 | (2,344)
Cash paid for extinguishment of debt |  | 0 | (13)
Other, net |  | 0 | (160)
Net cash used in financing activities |  | 0 | (2,517)
Net change in cash, cash equivalents, and restricted cash | [1] | 329,394 | 647,289
Cash, cash equivalents, and restricted cash at beginning of period | [1] | 313,943 | 12,372
Cash, cash equivalents, and restricted cash at end of period | [1] | 643,337 | 659,661
Operating Activities: |  |  |
Cash paid for interest, net of capitalized interest |  | (40,060) | (42,872)
Net cash (paid) refunded for income taxes |  | (106) | 15
Investing activities: |  |  |
Changes in capital expenditure accruals and other |  | 60,299 | 27,214
Supplemental non-cash investing activities: |  |  |
Carrying value of properties exchanged |  | 0 | 24,544
Supplemental non-cash financing activities: |  |  |
Non-cash loss on extinguishment of debt, net |  | 0 | 22
Dividends declared, but not paid |  | $ 5,584 | $ 5,563
[1] | Refer to Note 1 - Summary of Significant Accounting Policies for a reconciliation of cash, cash equivalents, and restricted cash reported to the amounts reported within the accompanying condensed consolidated balance sheets (“accompanying balance sheets”).

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- Definition Amount of income (expense) included in net income that results in no cash inflow (outflow), classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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- Definition Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 + Details
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- Definition The cash outflow to purchase long lived physical asset for use in the normal oil and gas operations and to purchase mineral interests in oil and gas properties not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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- Definition The cash outflow for exploration and development of oil and gas properties. It includes cash payments related to development of oil and gas wells drilled at previously untested geologic structures (to determine the presence of oil or gas) and wells drilled at sites where the presence of oil or gas has already been established (to extract the oil or gas). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3213-108585 + Details
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- Definition Amount of cash inflow from contractual arrangement with the lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount of cash inflow (outflow) from financing activities classified as other. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3095-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3098-108585 + Details
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- Definition The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3179-108585 + Details
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- Definition Amount of cash outflow for payment of an obligation from a lender, including but not limited to, letter of credit, standby letter of credit and revolving credit arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(f)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Depreciation, depletion, amortization, and accretion related to oil and gas producing activities. + References No definition available. + Details
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- Definition The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3602-108585 + Details
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